Why Your AC Is Not Cooling Properly (And What to Do)

One of the biggest frustrations a lot of homeowners have during the summer is that their air conditioner is running but not keeping their home cool. There are several factors that can contribute to this, ranging from simple incorrect thermostat settings to serious mechanical malfunctions and aging equipment. Understanding some of the common causes can help you identify whether the problem is something you can address on your own or if it requires professional attention.

Why AC Problems Are Common During Hot Indiana Summers

Indiana summers bring intense heat and humidity that can push your air conditioning system to its limits. As temperatures climb, your unit has to work harder and run longer cycles to adequately maintain a comfortable indoor temperature. This increased strain can expose existing problems with your system, like worn-out components or airflow restrictions. When combined with high humidity levels, these extreme summertime conditions often turn minor issues into more noticeable cooling problems, like your AC not running.

Check Your Thermostat Settings First

One of the first things you should do when you experience an issue is check your thermostat settings. You want to ensure that it’s set to cool and that your fan is set to auto. If you have your fan set to on, it will run even when your air conditioning system isn’t running, which feels like hot air circulating throughout your home. Make sure the temperature is set below the current room temperature.

Dirty Air Filters and Blocked Vents Can Limit Airflow

Clogged air filters can easily restrict airflow across the evaporator coil, which significantly reduces your system’s ability to cool your home and can lead to frozen evaporator coils. Closed or blocked vents can also have a similar effect, preventing cool air from circulating throughout your home. It’s a good idea to check your filter every month and replace it whenever necessary. Make sure that rugs, curtains, furniture, and other items aren’t covering any of your supply or return vents.

Tripped Breakers or Electrical Issues May Stop Cooling

If your AC unit isn’t turning on at all, the issue could be electrical. Start by checking your circuit breaker to see if it’s been tripped. If so, simply reset it and see if your system starts working. If your system repeatedly trips the breaker, it’s a sign of a deeper electrical problem, and you should wait for professional assistance.

How a Dirty Outdoor Unit Affects AC Performance

Your outdoor condenser unit is responsible for releasing heat from your home. Items like leaves, grass clippings, and other debris can build up on the coils inside the unit, reducing its efficiency. It’s a good idea to make sure the area around your unit is cleared of vegetation and other debris so it can work optimally.

More Serious Causes of Poor Cooling

As a homeowner, you can replace air filters, check thermostat settings, and check for things like debris build-up around your outdoor condenser unit. However, sometimes this basic troubleshooting won’t resolve the issue because the issue is more complex. Both electrical and mechanical components within the system can fail and require specialized diagnostics, especially in systems with worn parts and aging equipment. It’s important to seek out professional assistance, as issues gradually get worse over time if left unaddressed.

Refrigerant Leaks and Frozen Evaporator Coils

Unfortunately, refrigerant leaks are one of the most common problems that a lot of homeowners experience throughout the summer months. When your AC unit doesn’t have enough refrigerant, it can’t absorb enough heat from the indoor air, which leads to weak cooling performance. After a while, it will cause frozen evaporator coils in your system, which further restricts airflow. Refrigerant leaks must be repaired by a professional technician who can locate, repair, and recharge your system to its proper level.

Failing Capacitors, Compressor Issues, and Aging Equipment

Capacitors are responsible for starting your AC motors. Unfortunately, failing capacitors could prevent your system from turning on or could cause it to shut off unexpectedly. Compressor problems tend to be more serious, as they often signal inefficiencies and aging equipment. Malfunctioning systems and aging equipment over 10 years old should be evaluated by an HVAC technician, who can determine whether air conditioning installation and replacement is the most cost-effective solution compared to continued repairs.

Ductwork Leaks and Uneven Cooling Problems

If you notice that some rooms stay perfectly cool while others stay warm, you likely have ductwork leaks. These can develop over time inside your air duct runs or at any joints throughout your system. Ductwork leaks allow your cold air to escape into your attic, basement, or walls before reaching certain parts of your home. Sealing and insulating your ductwork can significantly improve system performance. If your home has rooms that are consistently difficult to cool due to ductwork limitations, ductless mini-split systems can provide targeted cooling without relying on existing ducts.

What You Can Safely Check Before Calling for Help

Before you call for repair service, you can certainly check your thermostat settings, replace dirty air filters, and ensure that all your vents are open and not obstructed. You can check your outdoor unit to clear away debris and reset any tripped circuit breaker. However, if you notice ice on your coils, water leaks, or unusual noises, it’s best to turn your system off and contact our technicians.

Getting Reliable Cooling During Peak Summer Demand

If you have an AC that isn’t running or is experiencing refrigerant leaks or even frozen evaporator coils, it’s best to get prompt assistance. While routine air conditioning maintenance is one of the best ways to reduce your risk of having a problem, it can’t completely eliminate it. Simply contact Korte Does It All today to get prompt air conditioning services in Fort Wayne, IN.

FAQs About AC Cooling Problems

Whether it’s about ductwork leaks, compressor issues, failing capacitors, or our Membership Plan, we get a lot of different questions from our clients. Below, we’ll answer some of the most frequent questions we receive so you can learn more about AC problems.